Karl gramm



(No Model.) K. GRAMMI.

PETROLEUM MOTOR BNGNE.

Patented NOV. 26, 18189.

wu W @M UNITED STATES PATENT GEEICE.

KARL GRAMM, or nERLIN, GERMANY.

PETROLEUM-MOTOR ENGINE.

SPECIFICATION forming part of Letters Patent No. 415,908, dated November26, 1 889. Application iled June 25, 1889. Serial No.` 315,479. (Nomodel.)

.To aZZ whom z't may concern! Be it known that I, KARL GRAMM, a subjectof the King of Prussia, residing at Berlin, in the Kingdom of Prussia,Germany, have invented new and useful Improvements in Petroleum-MotorEngines, yot' which the followingis a specification. j This inventionrelates to petroleum-motor engines, and has for its object to provide anapparatus by means of which the explosive mixture is produced andintroduced into the cylinder of the engine by causing a jet of air totake up a certain quantity of petroleum, Awhich mixes therewith' in theforni of a spray, the mixture `being then carried into the heatedcylinder.

The'invention is -carried out by means of the apparatus illustratedinthe accompanying drawings.

The air-jet is produced by means of a small air-pump A, driven by theengine, and passes from the valve-chamber` I3, through valve I), intothe chamber of the cylinder situated behind the valve II, where, by thesucking action of the air-jet, the petroleum is drawn out of the vesselG through the pipe f, and, mixing with the air in the form of spray, thesame and with a further body ot' air. into the vaporizing-chamber of thecylinder.

Figure l shows diagrammatically avertical section through `the completeapparatus. Figs. 2 and 3 show the construction of 'airpump employed inelevation and tion, on an enlarged scale.

The compressing-pump A is constructed as a pump Without valves, the pump-cylinder C being mounted on a fixed pivot at Q, so' as to haveein-oscillating motion imparted to it by the piston or plunger as thisis reciprocated by a crank driven by the engine. On the side of thecylinder is formed a fia-t face R,

against which is pressed air-tight ahead S,

fixed on the end of av pipe V. From the bottom of the cylinder a passage'l leads to a port U in the face R. Assuming the crank to be rotating inthe direction ofV the arrow,

u Fig. 2the piston during its upward or suction stroke will move' thecylinder from the central position shown toward the left and thenbackagain into that position, so that' during such stroke the port U willremain uncovered, and consequently the piston will passes with verticalsecdraw in air through it. Ou the return or compression stroke thecylinder in movingto the right of the position shown and back.

forced by the piston through the enlargedopening of S into the pipe V,the port U passing from behind the head again toward the end of thestroke. The head air-tight against the' face R by a spring, thecompressed air in the pipe V cannot escape when the cylinder isperforming the first-described semi-oscillation. A volume of compressedair being thus maintained by the pump in the chamber B, with which thepipe V communicates, a portion thereof is allowed to escape bytheopening of the valve D on the upstroke of the engine-piston C, whichair, passing through pipe E, issues as a jet immediately over theorifice of the petroleum-conduit f, before described, draws a certainquantity 0f petroleum out and carries it with it in the form of spray,'together with a further quantity past the valve H .in the valve-chamberH', into the cylinder-space F, thus forming a charge consisting offinely-divided petroleum spray and air, the petroleum of lwhich be- Sbeing pressed` situated at right 'angles thereto, and, as

of air drawn in through the pipe L,

comes efiectually vaporized on contact with the heated recessed bottom Kofthe cylinder, the charge being subsequently fired in the usual manner.

In order to maintain a constant level of the petroleum in the vesselG,there is arranged above the same a supply-tank M, from which it isallowcd'to drip into so-as to be slightly in excess ot' the amount used,the surplus flowing od through the overflow-'pipe O into the receptacleP. l

The valves D and l-I are both actuated by suitable cams driven bytheengine and timed so as to open them at the required moment.

,Having I claim as'new, and desire to secure by Letters Patent, is-

'1. In a petroleum-motor engine, the combination, with the cylinder C',having Vaporizing-chamber J, chamber H opening into thevaporizing-chalnber J, and having au inwardly-closing valve l-I, andair-discharge pipe I., the air-chaliiber B, with an inwardly- G througha cock N,

. air-pump for conveying an intermittent. air-v 2. einem@ opening valveD, and air-pipe E, connecting` with valvechainber ll', and the *air-pipeV, connecting with air-chamber B atone end and having the fixed head Sat the other end, of the oscillating air-pump cylinder A, having thesideair-passage T, leading from' one end of the cylinder and having the portU in the flat projection R, movable into and 'outo connection with thehead S, snbstantiallyjas described.

2. In a petrolen 11i-motor engine, a cylinder C', having avz-tporizing-ehamber J, 'a valvechamber l1', opening into the chamber J,with.

an' inwardly-elosin g valve I-I, 'an air-discharge pipe L, and air-jetpipe E, connected with an jet into the valve-chamber H', in combinartion with the oilareservoir G, having an over- -flow-pipe O, andanoil-discharge pipe f, con;

necting with valve-chamber H', the drip-.rev ceptacle l?, locatedbeneath the pipe 0, and the oilreservoir M, having a cock N, locatedabove the reservoir G, substantially as described. A

The coinbination,with the cylinder C', of a petrolenmfniotor enginehaving avaporizingchamber J a val ve-chalnbcr ll', open ing intooil-discharge pipe f, connecting with the valve chamber H', anoil-receptacle P, located beneath the pipe 0, an voil-reservoir M, withcock N, located above the 'reservoir G, an os- .cillatin g airpumpcylinder A, having the side the Y air-passage T leading from, one end ofcylinder, and having the air-outlet port U in the fiat projection R onthe sidoof the cylinder A, and` the air-chainber B, with theinlet-.valve D, air-jet pipe E, connecting with the valve-chamber Il,and the airpipe V, connected at one end with the air-chamber B, and atthe other having the fixed head S, connecting with port U, .and into andont of connection with which the port U is movable, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

Witnesses: z

GEO. H. MURPHY, G. HLSMANN.

KARL GRAMM.

